TL;DR
This paper constructs a BPS D-brane in a Z_3xZ_3 orbifold with discrete torsion that couples to RR potentials in both twisted and untwisted sectors, expanding the known spectrum of branes in such backgrounds.
Contribution
It introduces a new class of BPS D-branes in orbifolds with discrete torsion using generalized gluing conditions, unlike previously known non-BPS branes.
Findings
Constructed a BPS D-brane in Z_3xZ_3 orbifold with discrete torsion.
The new brane couples to RR potentials in both twisted and untwisted sectors.
Expands the understanding of D-brane spectrum in orbifolds with discrete torsion.
Abstract
We investigate D-branes in a Z_3xZ_3 orbifold with discrete torsion. For this class of orbifolds the only known objects which couple to twisted RR potentials have been non-BPS branes. By using more general gluing conditions we construct here a D-brane which is BPS and couples to RR potentials in the twisted and in the untwisted sectors.
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